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authorAldehir Rojas <hello@aldehir.com>2020-12-29 18:28:49 -0600
committerGitHub <noreply@github.com>2020-12-30 00:28:49 +0000
commit4f2f21dc05c70451593ba83ed7a0956c771850c2 (patch)
tree266942c390a6b8d78d6f7c2994039a5f8b2eba98 /docs/feature_rgb_matrix.md
parent7dd99f2b22a34143c0443154d9cd97540443b096 (diff)
Rewrite APA102 support (#10894)
* Rewrite APA102 support The APA102 source was broken by commit 16a15c1cfcbfd0feb2c2cf1383676747e2f97d73 as it did not include the quantum header. This commit addresses that, as well as other issues with transferring bytes over the SPI interface, i.e. it was not setting the clock pin back to low after sending a bit. The deviation when sending the end frame is kept, but updated to the latest from the referenced project. Finally, these changes expose the global LED brightness parameter of the APA102. Brightness values are configurable through `APA102_DEFAULT_BRIGHTNESS` and `APA102_MAX_BRIGHTNESS`. * Fix typo in led brightness extern * Move driver out of AVR directory and add delay for ARM * Experimental APA102 support on AVR and ARM Co-authored-by: Alde Rojas <hello@alde.io> * Refactor apa102_send_byte() calls to a loop * Implement io_wait function for ARM * Move APA102 drivers to own directory, fix copyright notice * Add APA102 keymap to handwired/onekey * Simplify RGBLIGHT_ENABLE/DRIVER option handling Co-authored-by: Mikkel Jeppesen <2756925+Duckle29@users.noreply.github.com>
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diff --git a/docs/feature_rgb_matrix.md b/docs/feature_rgb_matrix.md
index a9e711c9f2..bb0acba3bb 100644
--- a/docs/feature_rgb_matrix.md
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@@ -129,6 +129,28 @@ Configure the hardware via your `config.h`:
---
+### APA102 :id=apa102
+
+There is basic support for APA102 based addressable LED strands. To enable it, add this to your `rules.mk`:
+
+```makefile
+RGB_MATRIX_ENABLE = yes
+RGB_MATRIX_DRIVER = APA102
+```
+
+Configure the hardware via your `config.h`:
+
+```c
+// The pin connected to the data pin of the LEDs
+#define RGB_DI_PIN D7
+// The pin connected to the clock pin of the LEDs
+#define RGB_CI_PIN D6
+// The number of LEDs connected
+#define DRIVER_LED_TOTAL 70
+```
+
+---
+
From this point forward the configuration is the same for all the drivers. The `led_config_t` struct provides a key electrical matrix to led index lookup table, what the physical position of each LED is on the board, and what type of key or usage the LED if the LED represents. Here is a brief example:
```c